“I asked a professor of nanotechnology what they use to measure the unthinkable small distances of nanospace? He said it was the nanometre. This didn't help me very much. A nanometre is a billionth of a metre. I understood the idea but couldn't visualise what it meant. I said, "What is it roughly?" He thought for a moment and said, "A nanometre is roughly the distance that a man's beard grows in one second". I had never thought about what beards do in a second but they must do something. It takes them all day to grow about a milllimetre. They don't leap out of your face at eight o'clock in the morning. Beards are slow, languid things and our language reflects this. We do not say "as quick as a beard" or "as fast as a bristle". We now have a way of grasping of how slow they are - about a nanometre a second.”

“I thought you said he was your twin?”“Under that hair and beard, he is.”

“Okay," I said, "what's your biggest fear?"As always, he took a second to think about the answer."Clowns," he said."Clowns.""Yup."I just looked at him. "What?" he said, glancing over at me."That is not a real answer," I told him."Says who?""Says me. I meant a real fear, like of failure, of death, of regret. Like that. Something that keeps you awake nights, questioning your very existence."He thought for a second. "Clowns.”

“I have no idea why this is. I’m sure somebody with a beard and too much time on their hands would say it has something to do with sex - but they’ll say that about anything.”

“When I said I had no choice about helping you, I meant it. There was no other option because you are the only option. I don't trust anything at the moment. But the one thing I am sure of, the one thing I do trust..." he paused for a fraction of a second, "is the way I feel about you.”

“There he is, tall, tanned, Italian, sophisticated. So what do you do?"I said, "Er, leap on him and snog him within an inch of his life? Taking care not to strangle myself on his false beard, or disturb his banana.”